Quentin, I like the idea. There are flexible PV panels available so I could drape those things all over my car (hood, roof, trunk). Might look pretty silly but prototype experiments sometimes do!

Another thing I've been wondering about (only wondering mainly because of the likely high cost) is getting another battery pack (or two) and put it (them) in parallel with my existing pack. Figure out a way to fully charge all packs when the HAH is parked at home - this shouldn't be too hard. Then you'd have a lot more assist available. But, not knowing anything about the IMA battery system and software (which determines how much charging/discharging) is allowed, I'd probably just mess things up. Still, it'd be neat to use more IMA and less gas engine whether just trying to up the MPG or possibly getting more assisted accelerations!